alertar to alertPresent Perfect Tense / Perfecto de Indicativoyohe alertadotúhas alertadoél / Ud.ha alertadonosotroshemos alertadovosotroshabéis alertadoellos / Uds.han alertado
Other Tenses / Moods of Alertar Simple Tenses Present Tense Imperfect Tense Preterite (Past Tense) Future Tense Conditional Tense Subjunctive Tense Imperfect Subjunctive Future Subjunctive Imperative (Command) Past Participle & Gerund Compound Tenses Present Perfect Past Perfect Past Anterior (Preterite Perfect) Future Perfect Conditional Perfect Present Perfect Subjunctive Pluperfect Subjunctive Future Perfect Subjunctive